VIEWERS were left with just one question after Monday’s episode of Little Boy Blue – what happened to the gun used to shoot Rhys Jones ?

The second in the four-part ITV drama about the murder of the Liverpool schoolboy ended on a dramatic cliffhanger, with forensic tests showing a gun found in a teenager’s house was not the murder weapon.

Detective Superintendent Dave “Ned” Kelly (Stephen Graham) , believed his team had made a major breakthrough with the discovery of the gun hidden in the home of ‘Boy X’ – a formerly clean teen on the fringes of the gang who was forced into concealing it.

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Mr Robinson said this was because the bullet had not been “flying true” when it left the barrel of the gun and had “tumbled” in the air.

He said this would be because the bullet was unstable in the barrel, either because the rifling in the barrel was worn or the bullet was undersized. When he test-fired the revolver using new factory-made bullets, it did not create the same effect.

But when he used the cartridges found alongside the gun hidden in Boy X’s house, he found they created the distinctive keyhole effect.